/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:48:56,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:48:56,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:48:56,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:48:56,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:48:56,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:48:56,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:48:56,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:48:56,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:48:56,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:48:56,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:48:56,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:48:56,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:48:56,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:48:56,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:48:56,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:48:56,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:48:56,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:48:56,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:48:56,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:48:56,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:48:56,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:48:56,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:48:56,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:48:56,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:48:56,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:48:56,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:48:56,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:48:56,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:48:56,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:48:56,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:48:56,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:48:56,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:48:56,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:48:56,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:48:56,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:48:56,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:48:56,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:48:56,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:48:56,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:48:56,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:48:56,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:48:56,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:48:56,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:48:56,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:48:56,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:48:56,475 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:48:56,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:48:56,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:48:56,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:48:56,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:48:56,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:48:56,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:48:56,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:48:56,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:48:56,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:48:56,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:48:56,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:48:56,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:48:56,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:48:56,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:48:56,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:48:56,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:48:56,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:48:56,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:48:56,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:48:56,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:48:56,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:48:56,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:48:56,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:48:56,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:48:56,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:48:56,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:48:56,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:48:56,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:48:56,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:48:56,852 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:48:56,852 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-22 02:48:56,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4cdf0136/fedbadd9bfc840338a16515eb3f6c0aa/FLAGc95a0b866 [2020-08-22 02:48:57,511 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:48:57,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-22 02:48:57,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4cdf0136/fedbadd9bfc840338a16515eb3f6c0aa/FLAGc95a0b866 [2020-08-22 02:48:57,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4cdf0136/fedbadd9bfc840338a16515eb3f6c0aa [2020-08-22 02:48:57,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:48:57,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:48:57,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:57,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:48:57,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:48:57,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:57" (1/1) ... [2020-08-22 02:48:57,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:57, skipping insertion in model container [2020-08-22 02:48:57,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:57" (1/1) ... [2020-08-22 02:48:57,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:48:57,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:48:58,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:58,338 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:48:58,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:58,454 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:48:58,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58 WrapperNode [2020-08-22 02:48:58,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:58,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:48:58,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:48:58,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:48:58,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... [2020-08-22 02:48:58,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... [2020-08-22 02:48:58,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... [2020-08-22 02:48:58,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... [2020-08-22 02:48:58,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... [2020-08-22 02:48:58,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... [2020-08-22 02:48:58,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... [2020-08-22 02:48:58,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:48:58,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:48:58,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:48:58,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:48:58,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:48:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:48:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:48:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:48:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:48:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:48:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:48:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:48:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:48:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:48:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:48:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:48:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:48:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:48:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:48:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:48:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:48:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:48:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:48:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:48:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:48:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:48:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:48:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:48:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:48:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:48:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:48:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:48:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:48:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:48:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:48:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:48:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:48:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:48:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:48:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:48:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:48:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:48:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:48:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:48:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:48:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:48:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:48:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:48:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:48:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:48:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:48:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:48:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:48:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:48:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:48:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:48:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:48:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:48:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:48:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:48:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:48:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:48:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:48:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:48:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:48:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:48:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:48:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:48:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:48:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:48:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:48:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:48:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:48:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:48:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:48:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:48:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:48:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:48:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:48:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:48:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:48:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:48:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:48:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:48:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:48:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:48:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:48:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:48:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:48:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:48:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:48:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:48:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:48:59,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:48:59,857 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:48:59,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:59 BoogieIcfgContainer [2020-08-22 02:48:59,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:48:59,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:48:59,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:48:59,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:48:59,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:48:57" (1/3) ... [2020-08-22 02:48:59,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ce259c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:59, skipping insertion in model container [2020-08-22 02:48:59,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:58" (2/3) ... [2020-08-22 02:48:59,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ce259c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:59, skipping insertion in model container [2020-08-22 02:48:59,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:59" (3/3) ... [2020-08-22 02:48:59,879 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2020-08-22 02:48:59,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:48:59,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:48:59,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:48:59,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:48:59,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:48:59,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:48:59,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:48:59,947 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:48:59,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:48:59,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:48:59,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:48:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-08-22 02:48:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:48:59,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:59,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:59,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:59,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2020-08-22 02:49:00,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:00,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382692479] [2020-08-22 02:49:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,678 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:49:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:49:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:00,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382692479] [2020-08-22 02:49:00,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:00,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:49:00,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318606725] [2020-08-22 02:49:00,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:49:00,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:00,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:49:00,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:49:00,813 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2020-08-22 02:49:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:02,091 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2020-08-22 02:49:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:49:02,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:49:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:02,109 INFO L225 Difference]: With dead ends: 345 [2020-08-22 02:49:02,109 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 02:49:02,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:49:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 02:49:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-22 02:49:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 02:49:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-08-22 02:49:02,244 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2020-08-22 02:49:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:02,244 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-08-22 02:49:02,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:49:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-08-22 02:49:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:49:02,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:02,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:02,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:49:02,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2020-08-22 02:49:02,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:02,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248682935] [2020-08-22 02:49:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,553 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:49:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:02,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248682935] [2020-08-22 02:49:02,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:02,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:49:02,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548542817] [2020-08-22 02:49:02,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:49:02,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:02,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:49:02,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:49:02,600 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-08-22 02:49:03,028 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:04,018 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2020-08-22 02:49:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:49:04,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:49:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:04,022 INFO L225 Difference]: With dead ends: 278 [2020-08-22 02:49:04,022 INFO L226 Difference]: Without dead ends: 170 [2020-08-22 02:49:04,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:49:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-22 02:49:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-22 02:49:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-22 02:49:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2020-08-22 02:49:04,071 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2020-08-22 02:49:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:04,071 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2020-08-22 02:49:04,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:49:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2020-08-22 02:49:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:49:04,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:04,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:04,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:49:04,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:04,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:04,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2020-08-22 02:49:04,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:04,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96649986] [2020-08-22 02:49:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,362 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:04,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:49:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:49:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:04,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96649986] [2020-08-22 02:49:04,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:04,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:49:04,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596067220] [2020-08-22 02:49:04,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:49:04,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:04,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:49:04,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:49:04,449 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2020-08-22 02:49:04,906 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:05,197 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:05,429 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:05,668 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:07,074 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2020-08-22 02:49:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:49:07,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 02:49:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:07,081 INFO L225 Difference]: With dead ends: 287 [2020-08-22 02:49:07,081 INFO L226 Difference]: Without dead ends: 170 [2020-08-22 02:49:07,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:49:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-22 02:49:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-22 02:49:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-22 02:49:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-08-22 02:49:07,122 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2020-08-22 02:49:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:07,122 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-08-22 02:49:07,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:49:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-08-22 02:49:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 02:49:07,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:07,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:07,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:49:07,126 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2020-08-22 02:49:07,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:07,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148590644] [2020-08-22 02:49:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,396 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:49:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:49:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:49:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:07,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148590644] [2020-08-22 02:49:07,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:07,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:49:07,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791524773] [2020-08-22 02:49:07,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:49:07,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:07,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:49:07,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:49:07,485 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2020-08-22 02:49:07,805 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:08,909 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:09,746 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2020-08-22 02:49:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:49:09,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-22 02:49:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:09,755 INFO L225 Difference]: With dead ends: 390 [2020-08-22 02:49:09,755 INFO L226 Difference]: Without dead ends: 273 [2020-08-22 02:49:09,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:49:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-22 02:49:09,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-08-22 02:49:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-22 02:49:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2020-08-22 02:49:09,814 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2020-08-22 02:49:09,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:09,815 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2020-08-22 02:49:09,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:49:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2020-08-22 02:49:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 02:49:09,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:09,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:09,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:49:09,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:09,819 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2020-08-22 02:49:09,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:09,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986198408] [2020-08-22 02:49:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,101 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:49:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 02:49:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:49:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:10,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986198408] [2020-08-22 02:49:10,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:10,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:49:10,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858292667] [2020-08-22 02:49:10,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:49:10,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:49:10,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:49:10,258 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2020-08-22 02:49:10,923 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:11,833 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:12,162 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:12,756 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:12,981 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:13,243 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:14,422 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2020-08-22 02:49:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:49:14,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-22 02:49:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:14,427 INFO L225 Difference]: With dead ends: 691 [2020-08-22 02:49:14,427 INFO L226 Difference]: Without dead ends: 483 [2020-08-22 02:49:14,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:49:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-22 02:49:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2020-08-22 02:49:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-22 02:49:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2020-08-22 02:49:14,502 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2020-08-22 02:49:14,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:14,502 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2020-08-22 02:49:14,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:49:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2020-08-22 02:49:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 02:49:14,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:14,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:14,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:49:14,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:14,505 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2020-08-22 02:49:14,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:14,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869760178] [2020-08-22 02:49:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,791 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 02:49:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 02:49:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:14,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869760178] [2020-08-22 02:49:14,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:14,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:49:14,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119074340] [2020-08-22 02:49:14,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:49:14,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:14,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:49:14,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:49:14,964 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2020-08-22 02:49:15,485 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:16,618 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:16,916 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:17,930 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:18,188 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:18,425 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:18,784 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2020-08-22 02:49:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:49:18,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-22 02:49:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:18,789 INFO L225 Difference]: With dead ends: 522 [2020-08-22 02:49:18,789 INFO L226 Difference]: Without dead ends: 519 [2020-08-22 02:49:18,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:49:18,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-22 02:49:18,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2020-08-22 02:49:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-22 02:49:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2020-08-22 02:49:18,875 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2020-08-22 02:49:18,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:18,876 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2020-08-22 02:49:18,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:49:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2020-08-22 02:49:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-22 02:49:18,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:18,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:18,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:49:18,879 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:18,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:18,879 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2020-08-22 02:49:18,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:18,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107520057] [2020-08-22 02:49:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,112 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:19,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:49:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 02:49:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:49:19,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107520057] [2020-08-22 02:49:19,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:19,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:49:19,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447256767] [2020-08-22 02:49:19,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:49:19,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:19,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:49:19,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:49:19,283 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2020-08-22 02:49:20,166 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:20,418 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:20,651 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:20,889 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:22,128 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2020-08-22 02:49:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:49:22,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-22 02:49:22,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:22,134 INFO L225 Difference]: With dead ends: 922 [2020-08-22 02:49:22,134 INFO L226 Difference]: Without dead ends: 527 [2020-08-22 02:49:22,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:49:22,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-08-22 02:49:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2020-08-22 02:49:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-22 02:49:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2020-08-22 02:49:22,220 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2020-08-22 02:49:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:22,221 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2020-08-22 02:49:22,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:49:22,221 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2020-08-22 02:49:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-22 02:49:22,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:22,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:22,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:49:22,223 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:22,224 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2020-08-22 02:49:22,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:22,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181753884] [2020-08-22 02:49:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,490 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:49:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 02:49:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:49:22,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181753884] [2020-08-22 02:49:22,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:22,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:49:22,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470031738] [2020-08-22 02:49:22,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:49:22,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:22,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:49:22,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:49:22,668 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2020-08-22 02:49:23,602 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:23,845 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:24,079 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:24,700 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:24,969 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:25,215 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:26,529 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2020-08-22 02:49:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:49:26,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-08-22 02:49:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:26,535 INFO L225 Difference]: With dead ends: 942 [2020-08-22 02:49:26,535 INFO L226 Difference]: Without dead ends: 537 [2020-08-22 02:49:26,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:49:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-22 02:49:26,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2020-08-22 02:49:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-22 02:49:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2020-08-22 02:49:26,615 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2020-08-22 02:49:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:26,615 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2020-08-22 02:49:26,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:49:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2020-08-22 02:49:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-22 02:49:26,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:26,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:26,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:49:26,618 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:26,618 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2020-08-22 02:49:26,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:26,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916978084] [2020-08-22 02:49:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,853 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:49:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:49:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 02:49:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:49:27,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916978084] [2020-08-22 02:49:27,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:27,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:49:27,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977270892] [2020-08-22 02:49:27,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:49:27,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:27,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:49:27,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:49:27,071 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2020-08-22 02:49:27,668 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:28,231 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:30,710 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2020-08-22 02:49:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 02:49:30,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-08-22 02:49:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:30,717 INFO L225 Difference]: With dead ends: 1265 [2020-08-22 02:49:30,717 INFO L226 Difference]: Without dead ends: 852 [2020-08-22 02:49:30,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:49:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-22 02:49:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2020-08-22 02:49:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-08-22 02:49:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2020-08-22 02:49:30,872 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2020-08-22 02:49:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:30,874 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2020-08-22 02:49:30,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:49:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2020-08-22 02:49:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:49:30,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:30,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:30,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:49:30,879 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:30,879 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2020-08-22 02:49:30,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:30,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509262572] [2020-08-22 02:49:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,202 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:31,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:49:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:49:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:49:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 02:49:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 02:49:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:49:31,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509262572] [2020-08-22 02:49:31,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:49:31,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 02:49:31,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457490228] [2020-08-22 02:49:31,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 02:49:31,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:31,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 02:49:31,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 02:49:31,739 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 17 states. [2020-08-22 02:49:32,526 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:32,891 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:49:33,176 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:33,440 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:34,046 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:35,036 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:35,354 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:35,671 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:35,974 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:36,316 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:36,595 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:37,154 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 02:49:37,731 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 02:49:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:40,141 INFO L93 Difference]: Finished difference Result 1548 states and 1897 transitions. [2020-08-22 02:49:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 02:49:40,141 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-08-22 02:49:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:40,148 INFO L225 Difference]: With dead ends: 1548 [2020-08-22 02:49:40,148 INFO L226 Difference]: Without dead ends: 819 [2020-08-22 02:49:40,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 02:49:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-22 02:49:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 723. [2020-08-22 02:49:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-22 02:49:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 840 transitions. [2020-08-22 02:49:40,305 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 840 transitions. Word has length 107 [2020-08-22 02:49:40,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:40,305 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 840 transitions. [2020-08-22 02:49:40,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 02:49:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 840 transitions. [2020-08-22 02:49:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 02:49:40,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:40,309 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:40,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:49:40,310 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:40,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2020-08-22 02:49:40,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:40,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213635934] [2020-08-22 02:49:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,645 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:40,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:49:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:49:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:49:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:49:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 02:49:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 02:49:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:49:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:49:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 02:49:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-22 02:49:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 02:49:41,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213635934] [2020-08-22 02:49:41,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:49:41,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 02:49:41,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143631555] [2020-08-22 02:49:41,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 02:49:41,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:41,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 02:49:41,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:49:41,012 INFO L87 Difference]: Start difference. First operand 723 states and 840 transitions. Second operand 18 states. [2020-08-22 02:49:41,622 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:41,956 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:49:42,202 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:42,458 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:49:43,060 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:44,039 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:44,345 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:44,636 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:44,904 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:45,230 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:45,515 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:46,656 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:46,916 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:47,210 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:47,464 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:48,491 INFO L93 Difference]: Finished difference Result 1309 states and 1611 transitions. [2020-08-22 02:49:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:49:48,492 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2020-08-22 02:49:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:48,493 INFO L225 Difference]: With dead ends: 1309 [2020-08-22 02:49:48,493 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:49:48,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 02:49:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:49:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:49:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:49:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:49:48,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-22 02:49:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:48,499 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:49:48,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 02:49:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:49:48,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:49:48,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:49:48,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:49:49,488 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-22 02:49:49,865 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-22 02:49:50,002 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-22 02:49:50,162 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-22 02:49:51,746 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-22 02:49:53,780 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240